Magnetic display panel

Claim 2

A magnetic display panel comprising: a liquid containing panel having a front substrate formed of a material selected from the group consisting of transparent and translucent materials and a rear substrate disposed opposite to said substrate and bonded thereto by an adhesive comprising a polyester adhesive, a liquid sealing space being formed between said substrates; and a dispersing liquid having a yield value of at least 5 dyne/cm 2 sealed in said space, said dispersing liquid comprising, a fine particulate thickener selected from the group consisting of an olefinic polymer, olefinic copolymer, metal soap, fatty acid amide, wax and dextrin fatty acid ester; fine magnetic particles, a colorant and a dispersion medium, an image being recordable on said panel by a movable marking device having an oriented magnetic field.

Claim 3

The magnetic display panel according to claim 1 further comprising a multicell structure having a plurality of independent spaces disposed between said substrates and being bonded to the substrates by an adhesive.

Claim 4

The magnetic display panel according to claim 2 wherein said multicell structure comprises a plurality of honeycomb cores.

Claim 5

The magnetic display panel according to claim 1 or 2 wherein said fine magnetic particles comprise a material selected from the group consisting of black magnetite, gamma-hematite, chromium dioxide, ferrite, iron, cobalt and nickel including granulated particles thereof.

Claim 6

The magnetic display panel according to claim 1 or 2 wherein the movable marking device having an oriented magnetic field comprises one of a permanent magnet and an electromagnet.

Claim 7

A magnetic display panel comprising: a front substrate formed of a material selected from the group consisting of transparent and translucent materials and a rear substrate arranged opposite said front substrate, a liquid sealing space being formed between said substrates, said substrates being bonded together with an adhesive; and a liquid dispersion having a yield value of at least 5 dyne/cm 2 disposed in said liquid sealing space, said dispersion comprising fine magnetic particles, a colorant, a dispersion medium and an organic thickener comprising an olefinic polymer, display of an image being recordable on said panel by a movable marking device having an oriented magnetic field.

Claim 8

A magnetic display panel comprising: a front substrate formed of a material selected from the group consisting of transparent and translucent materials and a rear substrate arranged opposite said front substrate, a liquid sealing space being formed between said substrates, said substrates being bonded together with an adhesive; and a liquid dispersion having a yield value of at least 5 dyne/cm 2 disposed in said liquid sealing space, said dispersion comprising fine magnetic particles, a colorant, a dispersion medium and an organic thickener comprising an olefinic polymer, display of an image being recordable on said panel by a movable marking device having an oriented magnetic field.

Claim 9

A magnetic display panel comprising: a front substrate formed of a material selected from the group consisting of transparent and translucent materials and a rear substrate arranged opposite said front substrate, a liquid sealing space being formed betweeen said substrates, said substrates being bonded together with an adhesive; and a liquid dispersion having a yield value of at least 5 dyne/cm 2 disposed in said liquid sealing space, said dispersion comprising fine magnetic particles, a colorant, a dispersion medium and an organic thickener comprising a copolymer of an olefin and a monomer copolymerizable therewith, display of an image being recordable on said panel by a movable marking device having an oriented magnetic field.

Claim 10

A magnetic display panel comprising: a front substrate formed of a material selected from the group consisting of transparent and translucent materials and a rear substrate arranged opposite said front substrate, a liquid sealing space being formed betweeen said substrates, said substrates being bonded together with an adhesive; and a liquid dispersion having a yield value of at least 5 dyne/cm 2 disposed in said liquid sealing space, said dispersion comprising fine magnetic particles, a colorant, a dispersion medium and an organic thickener comprising a copolymer of an olefin and a monomer copolymerizable therewith, display of an image being recordable on said panel by a movable marking device having an oriented magnetic field.

Claim 11

A magnetic display panel comprising: a front substrate formed of a material selected from the group consisting of transparent and translucent materials and a rear substrate arranged opposite said front substrate, a liquid sealing space being formed between said substrates, said substrates being bonded together with an adhesive; and a liquid dispersion having a yield value of at least 5 dyne/cm 2 disposed in said liquid sealing space, said dispersion comprising fine magnetic particles, a colorant, a dispersion medium and an organic thickener comprising a fatty acid amide, display of an image being recordable on said panel by a movable marking device having an oriented magnetic field.

Claim 12

A magnetic display panel comprising: a front substrate formed of a material selected from the group consisting of transparent and translucent materials and a rear substrate arranged opposite said front substrate, a liquid sealing space being formed between said substrates, said substrates being bonded together with an adhesive; and a liquid dispersion having a yield value of at least 5 dyne/cm 2 disposed in said liquid sealing space, said dispersion comprising fine magnetic particles, a colorant, a dispersion medium and an organic thickener comprising a fatty acid amide, display of an image being recordable on said panel by a movable marking device having an oriented magnetic field.

Claim 13

A magnetic display panel comprising: a front substrate formed of a material selected from the group consisting of transparent and translucent materials and a rear substrate arranged opposite said front substrate, a liquid sealing space being formed between said substrates, said substrates being bonded together with an adhesive; and a liquid dispersion having a yield value of at least 5 dyne/cm 2 disposed in said liquid sealing space, said dispersion comprising fine magnetic particles, a colorant, a dispersion medium and an organic thickener comprising wax, display of an image being recordable on said panel by a movable marking device having an oriented magnetic field.

Claim 14

A magnetic display panel comprising: a front substrate formed of a material selected from the group consisting of transparent and translucent materials and a rear substrate arranged opposite said front substrate, a liquid sealing space being formed between said substrates, said substrates being bonded together with an adhesive; and a liquid dispersion having a yield value of at least 5 dyne/cm 2 disposed in said liquid sealing space, said dispersion comprising fine magnetic particles, a colorant, a dispersion medium and an organic thickener comprising wax, display of an image being recordable on said panel by a movable marking device having an oriented magnetic field.

Claim 15

A magnetic display panel comprising: a front substrate formed of a material selected from the group consisting of transparent and translucent materials and a rear substrate arranged opposite said front substrate, a liquid sealing space being formed between said substrates, said substrates being bonded together with an adhesive; and a liquid dispersion having a yield value of at least 5 dyne/cm 2 disposed in said liquid sealing space, said dispersion comprising fine magnetic particles, a colorant, a dispersion medium and an organic thickener comprising a dextrin fatty acid ester, display of an image being recordable on said panel by a movable marking device having an oriented magnetic field.

Claim 16

A magnetic display panel comprising: a front substrate formed of a material selected from the group consisting of transparent and translucent materials and a rear substrate arranged opposite said front substrate, a liquid sealing space being formed between said substrates, said substrates being bonded together with an adhesive; and a liquid dispersion having a yield value of at least 5 dyne/cm 2 disposed in said liquid sealing space, said dispersion comprising fine magnetic particles, a colorant, a dispersion medium and an organic thickener comprising a dextrin fatty acid ester, display of an image being recordable on said panel by a movable marking device having an oriented magnetic field.

Claim 17

A magnetic display panel comprising: a front substrate formed of a material selected from the group consisting of transparent and translucent materials and a rear substrate arranged opposite said front substrate, a liquid sealing space being formed between said substrates, said substrates being bonded together with an adhesive comprising a polyester adhesive; and a liquid dispersion having a yield value of at least 5 dyne/cm 2 disposed in said liquid sealing space, said dispersion comprising fine magnetic particles, a colorant, a dispersion medium and an organic thickener, display of an image recordable on said panel by a movable marking device having an oriented magnetic field.

Claim 18

A magnetic display panel comprising: a front substrate formed of a material selected from the group consisting of transparent and translucent materials and a rear substrate arranged opposite said front substrate, a liquid sealing space being formed between said substrates, said substrates being bonded together with an adhesive comprising a polyester adhesive; and a liquid dispersion having a yield value of at least 5 dyne/cm 2 disposed in said liquid sealing space, said dispersion comprising fine magnetic particles, a colorant, a dispersion medium and an organic thickener, display of an image recordable on said panel by a movable marking device having an oriented magnetic field.

Claim 19

A magnetic display panel comprising: a front substrate formed of a material selected from the group consisting of transparent and translucent materials and a rear substrate arranged opposite said front substrate, a liquid sealing space being formed between said substrates, said substrates being bonded together with an adhesive comprising an acrylic resin adhesive; and a liquid dispersion having a yield value of at least 5 dyne/cm 2 disposed in said liquid sealing space, said dispersion comprising fine magnetic particles, a colorant, a dispersion medium and an organic thickener, display of an image being recordable on said panel by a movable marking device having an oriented magnetic field.

Claim 20

A magnetic display panel comprising: a front substrate formed of a material selected from the group consisting of transparent and translucent materials and a rear substrate arranged opposite said front substrate, a liquid sealing space being formed between said substrates, said substrates being bonded together with an adhesive comprising an acrylic resin adhesive; and a liquid dispersion having a yield value of at least 5 dyne/cm 2 disposed in said liquid sealing space, said dispersion comprising fine magnetic particles, a colorant, a dispersion medium and an organic thickener, display of an image being recordable on said panel by a movable marking device having an oriented magnetic field.

Claim 21

The magnetic display panel according to claim 11, 12 or 7 wherein said organic thickener comprises an olefinic polymer.

Claim 22

The magnetic display panel according to claim 11, 12 or 7 wherein said organic thickener comprises a copolymer of an olefin and a monomer copolymerizable therewtih.

Claim 23

The magnetic display panel according to claim 11, 12 or 7 wherein said organic thickener comprises metal soap.

Claim 24

The magnetic display panel according to claim 11, 12 or 7 wherein said organic thickener comprises a fatty acid amide.

Claim 25

The magnetic display panel according to claim 11, 12 or 7 wherein said organic thickener comprises wax.

Claim 26

The magnetic display panel according to claim 11, 12 or 7 wherein said organic thickener comprises a dextrin fatty acid ester.

Claim 27

The magnetic display panel according to claim 6, 7 or 8 wherein said adhesive comprises an epoxy resin adhesive.

Claim 28

The magnetic display panel according to claim 6, 7, 8, 9 or 10 wherein said adhesive comprises a polyurethane adhesive.

Claim 29

The magnetic display panel according to claim 6, 7, 8, 9 or 10 wherein said adhesive comprises a vinyl adhesive.

Claim 30

The magnetic display panel according to claim 6, 7, 8, 9 or 10 wherein said adhesive comprises a polyester adhesive.

Claim 31

The magnetic display panel according to claim 6, 7, 8, 9 or 10 wherein said adhesive comprises an acrylic resin adhesive.

Claim 32

The magnetic display panel according to claim 6, 7, 8, 9 or 10 wherein said adhesive comprises a synthetic rubber adhesive.

Claim 33

A magnetic display panel comprising: a liquid containing panel having a front substrate formed of a material selected from the group consisting of transparent and translucent materials and a rear substrate disposed opposite to said substrate and bonded thereto by an adhesive comprising an acrylic resin adhesive, a liquid sealing space being formed between said substrates; and a dispersing liquid having a yield value of at least 5 dyne/cm 2 sealed in said space, said dispersing liquid comprising, a fine particulate thickener selected from the group consisting of an olefinic polymer, olefinic copolymer, metal soap, fatty acid amide, wax and dextrin fatty acid ester; fine magnetic particles, a colorant and a dispersion medium, an image being recordable on said panel by a movable marking device having an oriented magnetic field.

Claim 34

A magnetic display panel comprising: a liquid containing panel having a front substrate formed of a material selected from the group consisting of transparent and translucent materials and a rear substrate disposed opposite to said substrate and bonded thereto by an adhesive comprising an acrylic resin adhesive, a liquid sealing space being formed between said substrates; and a dispersing liquid having a yield value of at least 5 dyne/cm 2 sealed in said space, said dispersing liquid comprising, a fine particulate thickener selected from the group consisting of an olefinic polymer, olefinic copolymer, metal soap, fatty acid amide, wax and dextrin fatty acid ester; fine magnetic particles, a colorant and a dispersion medium, an image being recordable on said panel by a movable marking device having an oriented magnetic field.

Claim 35

The magnetic display panel according to claim 25 further comprising a multicell structure having a plurality of independent spaces disposed between said substrates and being bonded to the substrates by an adhesive.

Claim 36

The magnetic display panel according to claim 26 wherein said multicell structure comprises a plurality of honeycomb cores.

Claim 37

The magnetic display panel according to claim 25 or 26 wherein said fine magnetic particles comprise a material selected from the group consisting of black magnetite, gamma-hematite, chromium dioxide, ferrite, iron, cobalt and nickel including granulated particles thereof.

Claim 38

The magnetic display panel according to claim 25 or 26 wherein the movable marking device having an oriented magnetic field comprises one of a permanent magnet and an electromagnet.

Claim 39

A magnetic display panel comprising: a liquid containing panel having a front substrate formed of a material selected from the group consisting of transparent and translucent materials and a rear substrate disposed opposite to said substrate and bonded thereto by an adhesive comprising a synthetic rubber adhesive, a liquid sealing space being formed between said substrates; and a dispersing liquid having a yield value of at least 5 dyne/cm 2 sealed in said space, said dispersing liquid comprising, a fine particulate thickener selected from the group consisting of an olefinic polymer, olefinic copolymer, metal soap, fatty acid amide, wax and dextrin fatty acid ester; fine magnetic particles, a colorant and a dispersion medium, an image being recordable on said panel by a movable marking device having an oriented magnetic field.

Claim 40

A magnetic display panel comprising: a liquid containing panel having a front substrate formed of a material selected from the group consisting of transparent and translucent materials and a rear substrate disposed opposite to said substrate and bonded thereto by an adhesive comprising a synthetic rubber adhesive, a liquid sealing space being formed between said substrates; and a dispersing liquid having a yield value of at least 5 dyne/cm 2 sealed in said space, said dispersing liquid comprising, a fine particulate thickener selected from the group consisting of an olefinic polymer, olefinic copolymer, metal soap, fatty acid amide, wax and dextrin fatty acid ester; fine magnetic particles, a colorant and a dispersion medium, an image being recordable on said panel by a movable marking device having an oriented magnetic field.

Claim 41

The magnetic display panel according to claim 30 further comprising a multicell structure having a plurality of independent spaces disposed between said substrates and being bonded to the substrates by an adhesive.

Claim 42

The magnetic display panel according to claim 31 wherein said multicell structure comprises a plurality of honeycomb cores.

Claim 43

The magnetic display panel according to claim 30 or 31 wherein said fine magnetic particles comprise a material selected from the group consisting of black magnetite, gamma-hematite, chromium dioxide, ferrite, iron, cobalt and nickel including granulated particles thereof.

Claim 44

The magnetic display panel according to claim 30 or 31 wherein the movable marking device having an oriented magnetic field comprises one of a permanent magnet and an electromagnet.

Claim 45

A magnetic display panel comprising: a front substrate formed of a material selected from the group consisting of transparent and translucent materials and a rear substrate arranged opposite said front substrate, a liquid sealing space being formed between said substrates, said substrates being bonded together with an adhesive comprising a synthetic rubber adhesive; and a liquid dispersion having a yield value of at least 5 dyne/cm 2 disposed in said liquid sealing space, said dispersion comprising fine magnetic particles, a colorant, a dispersion medium and an organic thickener, display of an image recordable on said panel by a movable marking device having an oriented magnetic field.

Claim 46

A magnetic display panel comprising: a front substrate formed of a material selected from the group consisting of transparent and translucent materials and a rear substrate arranged opposite said front substrate, a liquid sealing space being formed between said substrates, said substrates being bonded together with an adhesive comprising a synthetic rubber adhesive; and a liquid dispersion having a yield value of at least 5 dyne/cm 2 disposed in said liquid sealing space, said dispersion comprising fine magnetic particles, a colorant, a dispersion medium and an organic thickener, display of an image recordable on said panel by a movable marking device having an oriented magnetic field.